Sash-supporter.



PATENTED AUG. 7, 1906.

.W. M. DUGKER. SASH SUPPORTER- APPLIUATION FILED DEC. 14,1905.

wwm%wad WILLIAM M. DUGKER, OF NET/V YORK, N. Y.

SASH-SUPPORTER.

Specification of Letters Patent.

Patented Aug. '7, 1906.

Application filed December 14., 1905. $erial No. 291,742.

T0 at whom, it may concern.-

t Be it known that 1, WILLIAM M. DUCKER, a citizen of the United States, residing in the borough of Brooklyn, in the county of Kings, in the city and State of New York, have invented certain new and useful Improvements in Sash-Supporters, of which the following is a specification.

This invention relates to automaticallyoperating friction devices for supporting window-sash, and the object is to provide a simple and effective device of a durable character which will not be liable to get out of order.

The characteristic features of this invention are a sliding plate guided at its ends in a casing and backed by one or more springs, a friction-wheel rotatively mounted in bearings on said plate and adapted to be held 11 against the adjacent part-either of the sas or the window-frameby the spring back of the plate, and a gravity-pawl slide on said sliding plate, the pawl or pawls on said slide adapted to engage ratchet-teeth on the friction-wheel and sto the said wheel from rotation when the sas is drawn down.

In the accompanying drawings, which illustrate an embodiment of the invention, Figure 1 is a perspective view of the supporter detached; and Fig. 2 is a transverse section of same, taken through the pawl slide and above the friction-wheel. Fig. 3 is a sectional elevation on a smaller scale, showing the device in operative position on the sash. Fig. 4 is a longitudinal section of a slightly-different form of the supporter, and Fig. 5 is a face view of the same. Fig. 6 shows a slightly-modified form of the wheel and pawl.

Referring primarily to Figs. 1, 2, and 8, 1 designates a U-shaped frame or casing, referably of metal, the uprights of which ave slots 2 and securing-flanges 3. A slide-plate 4, provided at its ends with lugs 5, which engage the respective slots 2, is backed by springs 6. The lugs and slots form guides for the movements of the plate 4 and also stops to limit its movement under the influence of the springs. Mounted in the plate 4 on r0- tative journals is a friction-wheel 7, provided (as shown in the principal views) with ratchet-teeth 8, formed integrally with it, and mounted slidably on the plate 4 is a gravity-pawl slide 9, having pawls 10, which engage the respective sets of ratchet teeth 0n the wheel.

Fig. 6 shows a variation in the frictionwheel. In this construction the wheel 7 a has two frictional faces and a single set of ratchet-teeth 8 between them. The pawlslide in this case has but one pawl.

Fig. 3 shows the application of the invention to a window-as a car-window, for example. In this figure, S designates the sash, F the frame, and B a bearing stile or strip n the frame. The supporter, here shown in longitudinal section, is set in the edge of the sash and secured by screws, which pass through screw-holes in the flanges 3. The plate 4 is pressed in, compressing the springs 6, these latter keeping the wheel 7 pressed strongly but yieldingly into peripheral contact with the strip B on the frame. The pawl-slide 9 is above the wheel, as the device is set in the sash, and its pawls engage the teeth of the ratchets by gravity, and the said teeth are so disposed that when the sash is pushed up the wheel 7 may rotate freely and offer no material resistance; but when the sash is raised and left so the weight of the sash is resisted by the friction of the wheel, as this latter is prevented from turning when the sash descends because of the engage.

ment of the pawls with the ratchet-teeth. A little extra force ap lied will, however, draw the sash down. Tl fe strip or stile B in the frame between the parting-beads may be plain in the case of a window of a house, for example; but for a car-window, where there is a continuous jolting or shaking, it is preferred to make this bearing-strip wavy or undulating on its face, as clearly shown in Fig. 3, so that the wheel may find a better hold or grip by engaging a recess of the undulating surface.

Figs. 4 and 5 illustrate a construction which is the same in principle as that described, but differs somewhat in detail from the latter. In this form of the device the coil-springs 6 are substituted by a leaf-spring 6, bearing on the back of the slide-plate 4 at the middle of the latter. The lugs 5 and slots 3 are substituted by a limiting device consisting of a pin 1 1, headed at both ends and slidably or loosely engaging both the frame 1 and the slide-plate. There are two wheels 7 in this construction, and the pawl-slide 9 carries two sets of pawls en aging the ratchetteeth on the respective wheels. There will be, of course, a supporter at each side of the sash, and for some sash there may be more than one at each side. Preferably the supporter will be set in the sash, and the strip B will form a part of the frame; but where the supporter is set in the frame the undulations over which the wheels roll, if such are used, will of course be on the sash, and the ratchetteeth will be reversed. This reversal of the parts will re uire no illustration, as it is within the skill 0 any workman. Obviously the frame 1 may be of any form of support or casing. The wheel may have the ratchet teeth formed integrally thereon, or these latter may be formed on ratchet-wheels secured rigidly by soldering or otherwise to the wheel proper. This is merely a matter of jud ment and economy. The ratchet-teeth shouId not touch the stile or strip over which the wheel rolls, and this strip may be of wood or metal, as preferred.

In my pending application, Serial No. 293,786, I show a construction in some respects similar to that abovedescribed but in that construction there is no movable or gravity pawl adapted to lay over ratchetteeth on the friction-whee when the sash is raised.

Having thus described my invention, I claim 1. A sash-supporter, comprising a frame, said frame being provided with slots 2 at its ends, a slide-plate 4:, having lugs which enteeth and prevent rotation of the wheel 7 when the sash descends.

2. A sash-supporter, comprising a frame provided with guides at its ends, a sliding plate mounted in the late with its ends engaging the guides on t e ends of the frame, a spring within the frame and behind said plate and tending to press the latter outward, a Wheel mounted rotatively in bearings on said sliding plate and provided with two sets of ratchet-teeth, one at each side of the wheel, a slidable pawl-plate mounted on the face of the said sliding plate, and a pair of rigid pawls thereon adapted to engage by gravity the teeth of the respective ratchets on said wheel and prevent rotation thereof when the sash descends.

In witness whereof I have hereunto signed my name, this 7th day of December, 1905, in the presence of two subscribing witnesses.

WILLIAM M. DUCKER.

Witnesses:

WILLIAM J. FIRTH, H. G. HosE. 

